﻿// @file  ModBusException.cs
// @author doublecat
// @date   2023-04-24
// @brief
// 
// Copyright (C) 2020  doublecat doublecat@163.com
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see http://www.gnu.org/licenses/.

namespace ModBus;

/// <summary>
/// 异常响应
/// </summary>
public class ModBusException
    : ADU {
    /// <summary>
    /// 构造函数
    /// </summary>
    /// <param name="sid"></param>
    /// <param name="fid"></param>
    /// <param name="err"></param>
    public ModBusException(byte sid, byte fid, byte err)
        : base(sid, fid, new byte[1] { err }) {
    }

    /// <summary>
    /// 异常代码
    /// </summary>
    public byte ExceptionCode => Data[0];
}